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I didn’t hear the phone. I ________ asleep.

A. must be     B. must have been

C. should be   D. should have been

I didn't hear the phone. I        asleep.

A. must be                    B. must have been           C. should be                         D. should have been

 I didn't hear the phone. I_____ asleep.

A. must be    B. must have been    C. should be    D. should have been

I didn't hear the phone. I ________ asleep.

A. must be

B. must have been

C. should be

D. should have been

A. must be

B. must have been

C. should be

D. should have been